A million mile batery

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warpedone
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A million mile batery

OdgovorNapisal/-a warpedone » 08 Sep 2019, 09:49

Tesla battery researcher unveils new cell that could last 1 million miles in --039-robot taxis--039- - Electrek

Otrok partnerstva Jeff Dahn in Tesle začenja kazat svoje sposobnosti.
“We present a wide range of testing results on an excellent moderate-energy-density lithium-ion pouch cell chemistry to serve as benchmarks for academics and companies developing advanced lithium-ion and other “beyond lithium-ion” cell chemistries to (hopefully) exceed. These results are far superior to those that have been used by researchers modelling cell failure mechanisms and as such, these results are more representative of modern Li-ion cells and should be adopted by modellers. Up to three years of testing has been completed for some of the tests. Tests include long-term charge-discharge cycling at 20, 40 and 55°C, long-term storage at 20, 40 and 55°C, and high precision coulometry at 40°C. Several different electrolytes are considered in this LiNi0.5Mn0.3Co0.2O2/graphite chemistry, including those that can promote fast charging. The reasons for cell performance degradation and impedance growth are examined using several methods. We conclude that cells of this type should be able to power an electric vehicle for over 1.6 million kilometers (1 million miles) and last at least two decades in grid energy storage.”


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Tole zna bit glava zvezda Tesla Battery Day naslednje leto.
technic, CRF, Marko007, Dzun Tao, BogyX, edi-b
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Re: A million mile batery

OdgovorNapisal/-a warpedone » 29 Feb 2020, 21:27

Dzun Tao
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Re: A million mile batery

OdgovorNapisal/-a Argo » 29 Feb 2020, 21:56

Kaj bom s tako baterijo. Ne mislim imet istega avta do smrti. Meni je dovolj oz. polna kapa če zdrži max 500k km, pol pa avto v prešo. Te blazne cifre so bolj za komercialno rabo (taxi, šleperji,...)

Dahn my azz. Sami kitajci.
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Re: A million mile batery

OdgovorNapisal/-a warpedone » 29 Feb 2020, 23:50

Ti nič, ti lepo počakaj na svoj X.
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Re: A million mile batery

OdgovorNapisal/-a crunchy » 01 Mar 2020, 07:27

warpedone je napisal/-a:https://electrek.co/2019/09/07/tesla-battery-cell-last-1-million-miles-robot-taxis/

Samo komentar slike (gre za prvi prispevek). Zanimivi "oulayerji", kjer kapaciteta v naslednjem ciklu kar pade iz 100% na 70% (dvakrat!) oziroma kar zraste iz 90% na 100% (ena meritev). Kljub enakomernim ostalim rezultatom bi se jaz vprašal kaj se je zgodilo. Napaka v meritvah ali nekakšni čudni procesi v bateriji? Bomo že izvedeli, če/ko pridejo na tržišče.
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Re: A million mile batery

OdgovorNapisal/-a warpedone » 01 Mar 2020, 10:46

Ob takih prigodah se vedno spomnim, da se je govorilo da je najtežji predmet v 1. letniku štrom-faksa Meritve.
Spomnim se tudi "prečrtanih" rezultatov na fizikalnih kolokvijih, ker je bila cifra zapisana z eno decimalko preveč.
Pa še tiste, da uspelega fizikalnega poskusa nikakor ne smeš ponavljat.
Vse skup pomeni, da kljub maksimalnim naporom po kontroli 'vseh' vplivov, vseeno ne kontroliraš vsega in so vmes 'neznanke', katere morda speglaš s ponavljanjem in variranjem čimveč kontroliranih elementov.

Vse skup je akademija, poanta je da so uspel najt alternativni aditiv, ki dela enako dobro kot problematični. In ga patentiral :P
Hecno, da je osnova 60 let stara diploma...
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Re: A million mile batery

OdgovorNapisal/-a Stromcek » 30 Mar 2020, 23:21

edi-b, DGJ

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